The changes of the bonds structure in sulphur vulcanizates of cis-1,4-polyisoprene in the vulcanization process
The results of investigations oh the changes in the structural parameters of the network and in the physical properties of sulphur vulcanizates of sunthetic cis-1,4-poiyisoprene in systems with a variable content of CBS-.accelerator and under conditions of a prolonged time of vulcanization have been presented. The existence of two ranges of changes in properties has been demonstrated: К-range fo r low concentrations of CBS, characteristic of conventional curing systems, and E-range fo r high concentrations of CBS, characteristic of effective curing systems. The boundary region between these two ranges is distinguished by rapid changes in the properties of the vulcanizates.
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